πŸ” Merge Identification Error Analysis

Visual analysis of incorrect predictions with images and model reasoning

πŸ“Š Summary Statistics

Total Errors: 245

False Positives: 104 (Model said merge, but shouldn't)

False Negatives: 141 (Model said no merge, but should)

Showing: First 20 examples

🚨 Error Case #1: False Negative - Model said NO MERGE, but should merge
Operation ID1257743
Segment ID864691134580600413
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We have a large, irregular, sheet‐like orange segment abutting a thin, elongated blue process. The orange shape is not roughly spherical (a soma), nor is it a tube of similar caliber or orientation to the blue branch; instead it appears as a broad β€œblob” that the blue process merely touches. There is no clear continuation of the blue cylinder into the orange mass in 3D. The orange segment dominates the field and is not a small extension or sphere that would naturally merge with the blue neurite. The contact is a side‐by‐side crossing rather than a single neurite splitting across the boundary. Thus this is not a correct merge: these appear to be two distinct processes that should remain separate. The merge should be rejected.
🚨 Error Case #2: False Negative - Model said NO MERGE, but should merge
Operation ID1257743
Segment ID864691134580600413
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The orange segment dominates the view at the interface point and is not roughly sphericalβ€”it fills nearly the entire field of view as a large blobβ€”while the blue segment is only a thin process extending out. According to the guidelines, when one segment (orange) fills the view and is not spherical, the merge is incorrect. Thus this is not a valid split error fix.
🚨 Error Case #3: False Negative - Model said NO MERGE, but should merge
Operation ID1257743
Segment ID864691134580600413
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The orange candidate is a large, irregular, non‐spherical volume dominating the field of view in all three projections, not just a compact soma-like sphere. It is much larger than the thin blue process and does not simply continue the direction of the blue neurite but rather presents an extensive blob that fills nearly the entire frame. According to the guidance (β€œif the orange segment takes up the complete field of view and it's not spherical, auto reject”), this proposed merge is incorrect.
🚨 Error Case #4: False Negative - Model said NO MERGE, but should merge
Operation ID1257743
Segment ID864691134580600413
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The orange segment is a large, sheet‐like structure dominating the view and is not a small spherical blob. Its main orientation at the interface does not align with the slender blue tube’s direction, and the join looks like two distinct processes rather than a continuous neurite. According to the rules (β€œif the orange segment takes up the complete field of view and is not spherical, auto reject”), this proposed merge is incorrect.
🚨 Error Case #5: False Negative - Model said NO MERGE, but should merge
Operation ID1257743
Segment ID864691134580600413
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

Examining the three views, the orange candidate is a large, irregularly shaped volume rather than a small globular or tubular continuation of the thin blue process. It occupies most of the field of view and is not spherical; it is much larger than the blue segment at the interface. This clearly violates the β€œorange too big” and β€œnot a small continuation” rejection criteria. Therefore this merge is incorrect.
🚨 Error Case #6: False Negative - Model said NO MERGE, but should merge
Operation ID1257743
Segment ID864691134580600413
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The orange segment dominates the entire field of view and is clearly not a small spherical fragment (nor a minor extension). It occupies a large, irregular volume rather than appearing as a compact end or continuation of the blue neurite. According to the guidelines, when the candidate merge is a large non‐spherical structure filling most of the view, the merge is almost certainly incorrect. Therefore this is not a real continuation of the blue segment, but rather a separate process.
🚨 Error Case #7: False Negative - Model said NO MERGE, but should merge
Operation ID1257743
Segment ID864691134580600413
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The orange object is a large, bulky volume (not a small spherical bouton) dominating the view and not simply a continuation of the slender blue neurite. The two segments are not aligned in the same trajectoryβ€”orange is a broad sheet-like structure orthogonal to the thin, winding blue process. They appear to be parts of distinct neurons rather than a single continuous process. This merge is therefore incorrect.
🚨 Error Case #8: False Negative - Model said NO MERGE, but should merge
Operation ID1257743
Segment ID864691134580600413
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We are being asked whether the blue segment (a thin process) and the orange β€œblob”/branch really belong to one continuous neurite, or whether this is a false merge. Key points: 1. At their apparent junction, the orange part must continue in the same 3D direction as the blue part if it truly is a continuation of the same process. 2. In the front and side views the blue process does appear to exit the orange mass in a roughly straight‐through path, but the top view tells the fuller story: the orange mass has its main tubular extension pointing to the right, while the blue branch emerges to the left. In 3D, these are opposing directions. 3. The orange piece is a large irregular non‐spherical blob (likely a branching hub or cell body), not just a small patch or sphere, and it dominates the field of viewβ€”another red flag against it being just a small missing chunk of the same thin neurite. Taken together, these indicate that the merge candidate (orange) is not simply the missing continuation of the blue process, but likely represents a different branch or even another neuron. Thus the merge is incorrect.
🚨 Error Case #9: False Positive - Model said MERGE, but should NOT merge
Operation ID1257848
Segment ID864691135013908886
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model PredictionπŸ”— Merge
Ground Truth❌ Should Not Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We’re looking at two neurite volumes (blue and orange) that meet at the central interface. The orange process is long and horizontal; the blue process is similar in diameter but branches off downward at the joint. Although the orange segment fills most of the frame, you can clearly see the blue branch emerging at the joinβ€”this is not just the orange segment β€œdominating” the view. The diameters at the interface are comparable, and the blue arm projects off the orange along a branch‐point geometry rather than running parallel or merely grazing alongside. This is exactly the kind of two pieces of the same arbor that should be merged to restore the branch point. Therefore, this is a true split error and the proposed merge is correct.
🚨 Error Case #10: False Positive - Model said MERGE, but should NOT merge
Operation ID1255508
Segment ID864691136372236424
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model PredictionπŸ”— Merge
Ground Truth❌ Should Not Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The orange and blue segments meet at a single, central β€œtrunk‐like” process. In the front view, an orange column rises to the middle where it contacts the blue bulb; in the side view we see that same orange column running vertically and touching the blue volume directly behind it; in the top view that trunk is again the lone orange process leading into the blue region. The thicknesses at the junction are comparable, the orange is not just a tiny speck nor entirely overwhelms the view, and the two line up in 3D as a continuous branch rather than running in parallel side-by-side. This appears to be a true split error – the blue region is simply the continuation or terminal arbor of the same neurite that is currently labeled as orange. Therefore the merge is correct, and we should return 1.
🚨 Error Case #11: False Negative - Model said NO MERGE, but should merge
Operation ID1255508
Segment ID864691135293484214
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The blue object is a large, bulky process or arbor and does not taper smoothly into the slender orange tube. Across all three views, the junction is abrupt: the blue mass ends and the thin orange fiber picks up at a different orientation. The orange segment is much thinner than the blue at the interface, and they do not share a continuous trajectory. This is not a continuation of the same neurite but rather two distinct processes abutting at a cut-plane. According to the criteria, the mismatch in thickness and abrupt change in direction mean this merge is incorrect.
🚨 Error Case #12: False Negative - Model said NO MERGE, but should merge
Operation ID1255508
Segment ID864691135293484214
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We are checking whether the thin, winding orange tube is actually the continuation of the same neuronal process that the bulkier blue segment represents, or whether it’s a distinct fragment that should remain separate. 1. Interface morphology: - The blue object is a relatively large, irregular β€œblob” in the center/right of the views. - The orange object is a long, thin, sinuous tube extending away from the center toward the lower left. 2. Size at the interface: - The orange branch is much thinner than the main blue mass. There is no blue β€œstem” of matching caliber continuing into the orange in any of the projections. - The blue is not just a spherical soma missing an axon/dendrite; it’s an extended, irregular shape that does not taper down to a tube matching the orange thickness. 3. Directional continuity: - In front view: the blue portion extends roughly to the right/upper right, but the orange extends down/left; they do not lie along a common vector. - Side view: the blue mass sits above center, but its protrusions do not align with the downward tilting orange tube. - Top view: the blue mass in upper right does not form a smooth tubular lead directly into the orange branch in lower left. 4. Gaps / Missing planes: - While a gap is permissible, here the morphology on each side of the gap does not suggest a seamless continuationβ€”no matching diameter or orientation. 5. Alternative explanations: - This looks like two distinct processes that come near each other but do not join: the thick blue structure (likely a dendritic arbor or glial process) and an unrelated thin axonal shaft. Conclusion: The orange is not simply the distal continuation of the blue segment; rather, it’s a different piece. The proposed merge would incorrectly fuse two separate processes. Therefore, we should reject this merge. Final answer: –1.
🚨 Error Case #13: False Negative - Model said NO MERGE, but should merge
Operation ID1255508
Segment ID864691135293484214
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The orange segment is a long, narrow tubular process that is much smaller in cross‐section and volume than the blue segment at the interface. In the multiple views it does not align colinearly with the blue segment’s trajectory; instead it emerges at a different angle and lies offset in Z (side view). According to the instructions, a candidate that is β€œvery small compared to the blue segment” or one that β€œdoes not continue in the same direction” should be rejected. This is not a proper continuation of the blue process, so the merge would be incorrect.
🚨 Error Case #14: False Positive - Model said MERGE, but should NOT merge
Operation ID1255278
Segment ID864691135209755885
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model PredictionπŸ”— Merge
Ground Truth❌ Should Not Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We have a long orange tubular process and a smaller blue tubular process meeting at a clear junction in the exact center of the crop. In all three orthogonal views the diameters of the two processes match at the interface, and the small blue branch clearly attaches to the larger orange fiber at a plausible bifurcation point. This is not a stray debris sphere (it’s clearly another neurite branch), nor are the two processes simply parallel fibers that happen to touch. Instead it is the same cell’s neurite that has been erroneously split into two fragments: the thin β€œblue” branch and the thicker β€œorange” continuation. Merging them restores a single continuous branching morphology. Thus, this is a genuine split error and the merge is correct.
🚨 Error Case #15: False Positive - Model said MERGE, but should NOT merge
Operation ID1255278
Segment ID864691135209755885
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model PredictionπŸ”— Merge
Ground Truth❌ Should Not Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

Analysis tags not found in response.
🚨 Error Case #16: False Negative - Model said NO MERGE, but should merge
Operation ID1257735
Segment ID864691135726099115
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

The two segments do not form a continuous, similarly sized tubular process at the interface. The blue segment is a thin stalk that abruptly meets a large, irregularly shaped orange blob that does not progress in the same direction. The orange region is much larger than the blue stalk and fills most of the view without a smooth continuation of the neurite. This fails the criteria for a valid merge (similar size and direction continuity). Therefore, the merge is incorrect.
🚨 Error Case #17: False Negative - Model said NO MERGE, but should merge
Operation ID1257735
Segment ID864691135726099115
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We need to decide if the blue and orange fragments are actually the same neurite or two separate processes. At the center interface they have similar tube diameters, so that criterion alone would support merging. However, when we compare directions in all three views: β€’ Front (XZ): both continue roughly vertically, so they look aligned in that projection. β€’ Side (YZ): the blue shaft tilts backwards and the orange shaft tilts forwards relative to the image plane, suggesting a mismatch in the YZ plane. β€’ Top (XY): the blue tube arrives at the merger point coming from down‐left, but the orange shaft departs toward up‐right, implying an abrupt ~90Β° turn in XY. Such a sharp kink at a missing plane is unlikely for a continuous neurite. Moreover, the large orange β€œblob” is part of a big arbor distinctly different from the small blue arbor, hinting at two neurons crossing rather than one broken into pieces. The sharp change in course across projections indicates these are parallel, intersecting processes rather than one continuous branch. Therefore this merge is incorrect. Final decision: do not merge β†’ return –1.
🚨 Error Case #18: False Negative - Model said NO MERGE, but should merge
Operation ID1257735
Segment ID864691135726099115
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model Prediction❌ No Merge
Ground TruthπŸ”— Should Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We have a blue segment below the center of the crop and an orange segment above it. At the interface (center of image) is a candidate merge. 1. Relative sizes/shapes: - The orange arbor is very large in all views and non‐spherical; it dominates the field of view. - The blue segment at the same interface plane is much thinner and only visible as a small stalk leading up into the orange mass. - Rule: β€œIf the orange segment takes up the complete FOV and is not spherical, the merge is incorrect.” This exactly matches our case. 2. Directional continuity: - In the front view the blue stalk approaches the interface almost vertically, but the orange mass fans out strongly to the right and back, introducing a sharp bend. - In top and side views there is likewise a pronounced change in trajectory rather than a simple continuation of the same process. 3. Spatial alignment: - Although they touch, the blue stalk does not continue straight into the orange process; the angular change is too large to be a single neurite extension. - If these were parts of the same branch, we would expect a smoother continuation, similar diameter ranges, or at least the orange piece appearing as a comparable cylindrical extension. 4. No evidence of a small spherical piece bridging a gap (which would argue for a split error). Instead we see two distinct arbor structures. Conclusion: This proposed merge is incorrect, likely two different neurons or processes mistakenly suggested for joining. We should auto‐reject the merge and return –1.
🚨 Error Case #19: False Positive - Model said MERGE, but should NOT merge
Operation ID1257735
Segment ID864691135014342646
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model PredictionπŸ”— Merge
Ground Truth❌ Should Not Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We have two segments, blue and orange, meeting near the center of the crop. The question is whether they are two disconnected pieces of the same neurite (a split error that should be merged) or truly separate processes. Key points: - The orange process is not tiny compared to the blue oneβ€”it has similar diameter and morphology at the interface. - It does not dominate the entire field of view. - The join region shows the orange tube extending exactly from the tip of the blue tube, with only a small gap (likely due to missing sections) and a smooth change of direction. - In 3D the orange extension is a natural continuation/branch of the blue segment, not a parallel neighbor. - None of the auto‐reject criteria (tiny orange, complete orange field, parallel side‐by‐side) apply. Therefore this is a correct split error fix: the two belong to the same neuron and should be merged.
🚨 Error Case #20: False Positive - Model said MERGE, but should NOT merge
Operation ID1257735
Segment ID864691135014342646
Modelo4-mini
Prompt Modeinformative+heuristic1+heuristic2+heuristic3+heuristic4+heuristic5+heuristic6+heuristic7
Model PredictionπŸ”— Merge
Ground Truth❌ Should Not Merge
Front View
front view
Side View
side view
Top View
top view

πŸ€– Model Analysis

We inspect the three orthogonal views at the proposed interface (center of each image). Front view: - The blue process approaches the center along a diagonal vector from below. - The orange continues outwards across the center, roughly collinear in 3D when taking into account tilt. Side view: - The blue emerges from a large blob, narrows into a cable that reaches the interface. - The orange continues the same cable‐like trajectory past the interface (with only a small apparent gap). Top view: - The blue cable approaches from the upper left. - The orange cable picks up exactly that same direction and continues to the lower right. Neither segment is purely spherical, nor is either tiny compared to the other at the interface. They form a single tube that just got split at a missing plane, and are well aligned in all 3 dimensions. This matches a true split error that should be merged.